- All sections
- D - Textiles; paper
- D21H - Pulp compositions; preparation thereof not covered by subclasses , ; impregnating or coating of paper; treatment of finished paper not covered by class or subclass ; paper not otherwise provided for
- D21H 23/34 - Knife or blade type coaters
Patent holdings for IPC class D21H 23/34
Total number of patents in this class: 44
10-year publication summary
1
|
6
|
4
|
4
|
5
|
1
|
4
|
1
|
5
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
WestRock MWV, LLC | 335 |
11 |
Metso Paper, Inc. | 528 |
7 |
Voith Patent GmbH | 2727 |
6 |
Nippon Paper Industries Co., Ltd. | 782 |
3 |
BTG Eclepens S.A. | 28 |
2 |
Paptic Oy | 25 |
2 |
Ike-service Oy | 2 |
2 |
Merck Patent GmbH | 5909 |
1 |
Daio Paper Corporation | 1407 |
1 |
Fiberlean Technologies Limited | 116 |
1 |
OrganoClick AB | 70 |
1 |
PA Knowledge Limited | 48 |
1 |
Swedev AB | 12 |
1 |
UPM-Kymmene Corporation | 868 |
1 |
Valmet Technologies, Inc. | 174 |
1 |
Valmet Technologies Oy | 284 |
1 |
Ahlstrom-munksjo Oyj | 242 |
1 |
Zhejiang Jinlong Paper Co., Ltd | 1 |
1 |
Other owners | 0 |